Doctor Who #74: Planet of the Spiders

Data
Title: Doctor Who: “Planet of the Spiders”
Year: 1974
Network: BBC
Episodes: 6, at 25 minutes each; the last story (of five) from season eleven
Creators: Sydney Newman, C.E. Webber, Donald Wilson
Director: Barry Letts
Writer: Robert Sloman
Starring: Jon Pertwee
With: Elisabeth Sladen, Nicholas Courtney, Richard Franklin, John Levene, John Dearth, Kevin Lindsay, John Kane
Music: Ron Grainer (theme); Dudley Simpson
I saw it: on video (rented from Netflix), over the past few days
Synopsis: spiders from space use Buddhists to invade Earth

My reaction
Concept: I was promised giant spiders. These spiders are enormous at best. If you're going to have over-sized bugs, make them giant, people!
Story: Not bad, considering how much of it is nonsense and plot-holed.
Characters:
Dialog:
Pacing: Most of it is good, but the second episode is almost entirely a chase scene - which is bad, since on a 1970s BBC budget, "chase scene" should read "following scene."
Cinematography:
Special effects/design: Design is meh. Special effects are terrible.
Acting:
Music:
Subjective Rating: 6/10 (Okay, ). Very badly made, but mostly entertaining. You can tell they were at least trying hard to make it exciting.
Objective Rating (Average):